Double-shaft hinge and electronic device

ABSTRACT

A double-shaft hinge and an electronic device are provided. The double-shaft hinge includes a transmission device, and a first rotation shaft and a second rotation shaft in parallel with each other. The transmission device includes a first transmission member sleeved on the first rotation shaft and circumferentially fixed on the first rotation shaft, a second transmission member sleeved on the second rotation shaft and circumferentially fixed on the second rotation shaft, and a third transmission member. The third transmission member is arranged between the first transmission member and the second transmission member, and has one end engaged with the first transmission member, and another end engaged with the second transmission member. The first transmission member and the second transmission member are connected by the third transmission member to be rotatable with respect to each other in opposite directions simultaneously.

This application claims the benefit of priority to Chinese PatentApplication No. 201410447317.X titled “DOUBLE-SHAFT HINGE AND ELECTRONICDEVICE”, filed with the Chinese State Intellectual Property Office onSep. 3, 2014, the entire disclosure of which is incorporated herein byreference.

TECHNICAL FIELD

The present application relates to the technical field of hinges, andparticularly to a double-shaft hinge and an electronic device having thedouble-shaft hinge.

BACKGROUND

An electronic device, such as a laptop or a foldable tablet computer,includes two parts connected to each other. The two parts are a firstbody with a screen and a second body with components of a host, and thefirst body and the second body are rotatably connected to each other bya double-shaft hinge. The first body and the second body can beconnected by the double-shaft hinge to be rotatable with respect to eachother in opposite directions simultaneously.

The double-shaft hinge has a few structural forms, which leaves a user afew choices, and there are a few types of the double-shaft hinges.

SUMMARY

According to one aspect, a double-shaft hinge is provided according tothe present application, which includes a first rotation shaft and asecond rotation shaft in parallel with each other, and a transmissiondevice, the transmission device includes a first transmission memberfixed on the first rotation shaft; a second transmission member fixed onthe second rotation shaft; and a third transmission member arrangedbetween the first transmission member and the second transmissionmember; wherein the first transmission member and the secondtransmission member are rotatable with respect to each other in oppositedirections simultaneously via the third transmission member.

According to another aspect, an electronic device is provided accordingto the present application, which includes a first body and a secondbody, and a double-shaft hinge; the double-shaft hinge includes a firstrotation shaft and a second rotation shaft in parallel with each other,and a transmission device; the transmission device includes a firsttransmission member fixed on the first rotation shaft; a secondtransmission member fixed on the second rotation shaft; and a thirdtransmission member arranged between the first transmission member andthe second transmission member; wherein the first transmission memberand the second transmission member are rotatable with respect to eachother in opposite directions simultaneously via the third transmissionmember.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an assembly structural schematic view of a double-shaft hingeaccording to an embodiment of the present application.

FIG. 2 is an exploded structural schematic view of the double-shafthinge in FIG. 1, wherein the first connection member and the secondconnection member are shown.

FIG. 3 is an assembly structural schematic view of another double-shafthinge according to an embodiment of the present application.

FIG. 4 is an exploded structural schematic view of the double-shafthinge in FIG. 3.

FIG. 5 is an assembly structural schematic view of another double-shafthinge according to an embodiment of the present application.

FIG. 6 is an exploded structural schematic view of the double-shafthinge in FIG. 5.

FIG. 7 is a perspective structural schematic view of an electronicdevice according to an embodiment of the present application.

DETAILED DESCRIPTION

For further illustrating the technical means and the effects of thepresent application, the embodiments, structures, features and effectsof the present application will be described in detail in conjunctionwith drawings and preferred embodiments hereinafter. In the followingdescription, “an embodiment” or “the embodiment” appeared at differentpositions may not refer to a same embodiment. In addition, the specificfeatures, structures, or characteristics in one or more embodiments maybe combined in any form.

As shown in FIG. 1 to FIG. 6, a double-shaft hinge 30 according to anembodiment of the present application includes a first rotation shaft 1,a second rotation shaft 2, and a transmission device 3. The firstrotation shaft 1 is in parallel with the second rotation shaft 2.

The transmission device 3 includes a first transmission member 31, asecond transmission member 33, and a third transmission member 32. Thefirst transmission member 31 is sleeved on the first rotation shaft 1and is circumferentially fixed on the first rotation shaft 1, therebyallowing the first transmission member 31 to be rotatable along with thefirst rotation shaft 1. The second transmission member 33 is sleeved onthe second rotation shaft 2 and is circumferentially fixed on the secondrotation shaft 2, thereby allowing the second transmission member 33 tobe rotatable along with the second rotation shaft 2. The thirdtransmission member 32 is arranged between the first transmission member31 and the second transmission member 33, and has one end engaged withthe first transmission member 31 and another end engaged with the secondtransmission member 33.

The first transmission member 31 and the second transmission member 33are connected by the third transmission member 32 to be rotatable withrespect to each other in opposite directions simultaneously. The “berotatable with respect to each other in opposite directionssimultaneously” refers to that the first transmission member 31 and thesecond transmission member 33 can rotate simultaneously and the rotationdirections of the first transmission member 31 and the secondtransmission member 33 are opposite. When the first transmission member31 rotates clockwise, the second transmission member 33 rotatesanticlockwise; and when the first transmission member 31 rotatesanticlockwise, the second transmission member 33 rotates clockwise.

The double-shaft hinge 30 according to the embodiment of the presentapplication provides more choices for users, and enriches the type ofthe double-shaft hinge.

Further, for achieving the function of the transmission device 3, asolution is further provided hereinafter. As shown in FIGS. 1 and 2, thefirst transmission member 31 is a first worm gear, the secondtransmission is a second worm gear, and the third transmission member 32is a worm. The worm includes an axle, and the axle of the worm isperpendicular to the first rotation shaft 1 and the second rotationshaft 2. The transmission device 3 in this embodiment is a worm and wormgear transmission mechanism, and the first worm gear and the second wormgear are connected by the worm to be rotatable with respect to eachother in opposite directions simultaneously.

Further, for arranging the worm between the first worm gear and thesecond worm gear, a solution is further provided according to thepresent application hereinafter. As shown in FIG. 2, the double-shafthinge 30 further includes a first connection member 4. The firstrotation shaft 1 and the second shaft 2 pass through the firstconnection member 4, respectively, and both of the first rotation shaft1 and the second rotation shaft 2 are rotatable with respect to thefirst connection member 4. Two via holes are provided on the firstconnection member 4, and a diameter of each via hole is greater thanouter diameters of the first rotation shaft 1 and the second rotationshaft 2. When the first connection member 4 is immobilized, each of thefirst rotation shaft 1 and the second rotation shaft 2 is rotatable withrespect to the first connection member 4 in the respective via hole. Thefirst connection member 4 is provided with a support frame 41, and theaxle of the worm is rotatably mounted on the support frame 41. In thisembodiment, each of the first connection member 4 and the support frame41 is in the shape of a plate, and the first connection member 4 and thesupport frame 41 are formed integrally. Certainly, in other embodiments,the support frame 41 may also be an individual member, which can befixed to the first connection member 4 by screws, or other members. Themanner of forming the support frame 41 and the first connection member 4can be set according to the actual requirements of the user.

Further, to allow the axle of the worm to be rotatably mounted on thesupport frame 41, a solution is further provided according to thepresent application hereinafter. As shown in FIG. 2, the double-shafthinge 30 further includes a second connection member 5, and the firstrotation shaft 1 and the second rotation shaft 2 pass through the secondconnection member 5, and both of the first rotation shaft 1 and thesecond rotation shaft 2 are rotatable with respect to the secondconnection member 5. Two via holes are provided on the second connectionmember 5, and a diameter of each via hole is greater than outerdiameters of the first rotation shaft 1 and the second rotation shaft 2.When the second connection member 5 is immobilized, each of the firstrotation shaft 1 and the second rotation shaft 2 is rotatable withrespect to the second connection member 5 in the respective via hole.

Both of the first worm gear and the second worm gear are arrangedbetween the first connection member 4 and the second connection member5. Specifically, both of the first worm gear and the second worm gearare sandwiched between the first connection member 4 and the secondconnection member 5.

The support frame 41 is provided with a groove 411, and the axle of theworm is mounted in the groove 411 and rotatably cooperates with thegroove 411. The axle of the worm is rotatable in the groove 411. Thesecond connection member 5 is provided with a protrusion 51 to limit theaxle of the worm to rotate in the groove 411. In this embodiment, theprotrusion 51 abuts against the support frame 41, and the protrusion 51closes an opening of the groove 411, thus, the groove 411 and theprotrusion 51 cooperate with each other to form an axle hole. Theprotrusion 51 can prevent the axle of the worm from sliding out of thegroove 411 and allow the axle of the worm to be rotatable in the groove411. The first connection member 4 and the second connection member 5cooperate with each other to mount and fix the worm, which facilitatesassembling and disassembling the worm.

Further, to allow the axle of the worm to be rotatably mounted on thesupport frame 41, a solution is further provided according to thepresent application hereinafter. The support frame 41 is provided withan axle hole, and the axle of the worm is mounted in the axle hole androtatably cooperates with the axle hole. In this embodiment, the supportframe 41 and the first connection member 4 are both a plastic member,and the support frame 41 is slightly elastic. In assembling the worm,the support frame 41 is bent to one side to generate a certain gap, toallow the axle of the worm to be assembled into the axle hole on thesupport frame 41 conveniently. The specific manner is not limited tothis embodiment and can be set according to the actual requirements ofthe user.

Further, to fix the position of each of the first worm gear and thesecond worm gear on the respective rotation shaft, a solution is furtherprovided according to the present application hereinafter. The firstworm gear has one end abutting against the first connection member 4,and another end abutting against the second connection member 5. Thesecond worm gear has one end abutting against the first connectionmember 4, and another end abutting against the second connection member5. Specifically, the first connection member 4 and the second connectionmember 5 are configured to sandwich the first worm gear and the secondworm gear therebetween, to fix the positions of the first worm gear andthe second worm gear, prevent each of the first worm gear and the secondworm gear from sliding on the respective rotation shaft, therebyimproving the transmission accuracy of the first worm gear and thesecond worm gear.

Further, to achieve the function of the transmission device 3, asolution is further provided according to the present applicationhereinafter. As shown in FIG. 3 and FIG. 4, the first transmissionmember 31 is a first spiral gear, the second transmission member 33 is asecond spiral gear, and the third transmission gear 32 is a third spiralgear. The third spiral gear includes an axle, and the axle of the thirdspiral gear is in parallel with the first rotation shaft 1 and thesecond rotation shaft 2. The first spiral gear and the second spiralgear are connected by the third spiral gear to be rotatable with respectto each other in opposite directions simultaneously.

Further, to arrange the third spiral gear between the first spiral gearand the second spiral gear, a solution is further provided according tothe present application hereinafter. As shown in FIG. 3 and FIG. 4, thedouble-shaft hinge 30 further includes a third connection member 6 and afourth connection member 7.

The first rotation shaft 1 passes through the third connection member 6and the fourth connection member 7 in turn, and the first rotation shaft1 is rotatable with respect to both the third connection member 6 andthe fourth connection member 7. Each of the third connection member 6and the fourth connection member 7 is provided with a via hole allowingthe first rotation shaft 1 to pass through, and a diameter of the viahole of each of the third connection member 6 and the fourth connectionmember 7 is greater than the outer diameter of the first rotation shaft1. When the third connection member 6 and the fourth connection member 7are immobilized, the first rotation shaft 1 is rotatable with respect toboth the third connection member 6 and the fourth connection member 7.

The second rotation shaft 2 passes through the third connection member 6and the fourth connection member 7 in turn, and the second rotationshaft 2 is rotatable with respect to both the third connection member 6and the fourth connection member 7. Each of the third connection member6 and the fourth connection member 7 is provided with a via holeallowing the second rotation shaft 2 to pass through, and a diameter ofthe via hole of each of the third connection member 6 and the fourthconnection member 7 is greater than the outer diameter of the secondrotation shaft 2. When the third connection member 6 and the fourthconnection member 7 are immobilized, the second rotation shaft 2 isrotatable with respect to both the third connection member 6 and thefourth connection member 7.

Both of the first spiral gear and the second spiral gear are arrangedbetween the third connection member 6 and the fourth connection member7. Both of the third connection member 6 and the fourth connectionmember 7 are sandwiched between the first spiral gear and the secondspiral gear.

Each of the third connection member 6 and the fourth connection member 7is provided with a first axle hole (not shown), and the axle of thethird spiral gear is mounted in the first axle holes and rotatablycooperates with the first axle holes. When the first spiral gearrotates, the second spiral gear can be rotated by the first spiral gearvia the third spiral gear.

Further, as shown in FIG. 3 and FIG. 4, the first spiral gear has oneend abutting against the third connection member 6, and another endabutting against the fourth connection member 7. The second spiral gearhas one end abutting against the third connection member 6, and anotherend abutting against the fourth connection member 7. The thirdconnection member 6 and the fourth connection member 7 are configured tosandwich the first spiral gear and the second spiral gear therebetween,to fix the positions of the first spiral gear and second spiral gear,and prevent each of the first spiral gear and the second spiral gearfrom sliding on the respective rotation shaft, thereby improving thetransmission accuracy of the first spiral gear and the second spiralgear.

Further, to achieve the function of the transmission device 3, asolution is further provided according to the present applicationhereinafter. As shown in FIG. 5 and FIG. 6, the first transmissionmember 31 is a first helical gear, the second transmission member 33 isa second helical gear, and the third transmission member 32 is a thirdhelical gear. The third helical gear is provided with an axle, and theaxle 321 of the third helical gear is perpendicular to the firstrotation shaft 1 and the second rotation shaft 2. As shown in FIG. 5,the axle 321 of the third helical gear is perpendicular to a horizontalplane, and the first rotation shaft 1 and the second rotation shaft 2are arranged in the horizontal direction. The transmission device 3 inthis embodiment is a helical gear transmission mechanism. The firsthelical gear and the second helical gear are connected by the thirdhelical gear to be rotatable with respect to each other in oppositedirections simultaneously.

Further, to mount the third helical gear between the first helical gearand the second helical gear, a solution is further provided according tothe present application hereinafter. As shown in FIG. 5 and FIG. 6, thedouble-shaft hinge 30 further includes a first shaft sleeve 8 and asecond shaft sleeve 9. The first shaft sleeve 8 is sleeved on the firstrotation shaft 1 and is rotatable with respect to the first rotationshaft 1, and the second shaft sleeve 9 is sleeved on the second rotationshaft 2 and is rotatable with respect to the second rotation shaft 2. Aninner diameter of the first shaft sleeve 8 is greater than the outerdiameter of the first rotation shaft 1, and the first rotation shaft 1is rotatable with respect to the first shaft sleeve 8. An inner diameterof the second shaft sleeve 9 is greater than the outer diameter of thesecond rotation shaft 2, and the second rotation shaft 2 is rotatablewith respect to the second shaft sleeve 9.

The axle 321 of the third helical gear has one end mounted on the firstshaft sleeve 8, and another end mounted on the second shaft sleeve 9,and the third helical gear is rotatable with respect to both the firstshaft sleeve 8 and the second shaft sleeve 9 via the axle thereof. Anupper end of the third helical gear is engaged with the first helicalgear, and a lower end of the third helical gear is engaged with thesecond helical gear.

Further, to allow the third helical gear to be rotatable with respect tothe first shaft sleeve 8 and the second shaft sleeve 9 via the axle, asolution is further provided according to the present applicationhereinafter. As shown in FIG. 6, the third helical gear is provided witha second axle hole, and the axle of the third helical gear is mounted inthe second axle hole and rotatably cooperates with the second axle hole,to allow the third helical gear to be rotatable with respect to theaxle, which further allows the third helical gear to be rotatable withrespect to both the first shaft sleeve 8 and the second shaft sleeve 9.

Certainly, in other embodiments, to allow the third helical gear to berotatable with respect to the first shaft sleeve 8 and the second shaftsleeve 9 via the axle, a solution is further provided according to thepresent application hereinafter. The axle 321 of the third helical gearand the third helical gear are formed integrally. Each of the firstshaft sleeve 8 and the second shaft sleeve 9 is provided with an axlehole, and the axle 321 of the third helical gear is mounted in the axleholes and rotatably cooperates with the axle holes, to allow the thirdhelical gear to be rotatable with respect to both the first shaft sleeve8 and the second shaft sleeve 9.

Further, to fix the positions of the first rotation shaft 1 and thesecond rotation shaft 2 after being rotated, a solution is furtherprovided according to the present application hereinafter. As shown inFIG. 1 to FIG. 6, the double-shaft hinge 30 further includes twolocating assemblies 20. One of the locating assemblies 20 are sleeved onthe first rotation shaft 1, and the other of the locating assemblies 20are sleeved on the second rotation shaft 2. The locating assemblies 20are provided for fixing the positions of the first rotation shaft 1 andthe second rotation shaft 2 after being rotated.

Each of the first rotation shaft 1 and the second rotation shaft 2includes a shaft shoulder 10. The transmission device 3 is arrangedbetween the locating assemblies 20 and the shaft shoulders 10. One sideof the transmission device 3 abuts against the locating assemblies 20,and another side thereof abuts against the shaft shoulders 10. Thetransmission device 3 is tightly sandwiched between the shaft shoulders10 and the locating assemblies 20 at a middle of the rotation shafts.

Further, to achieve the function of the locating assemblies 20, asolution is further provided according to the present applicationhereinafter. As shown in FIG. 1 to FIG. 6, each of the locatingassemblies 20 includes a fixing member 13, at least two gaskets 11, andat least one elastic member 12. The gaskets 11 are sleeved on therotation shaft (the first rotation shaft 1 and the second rotation shaft2) and are circumferentially fixed on the rotation shaft, to allow thegaskets to be rotatable along with the rotation shaft. The elasticmember 12 is sleeved on the rotation shaft (the first rotation shaft 1and the second rotation shaft 2) and is rotatable with respect to therotation shaft. An inner diameter of the elastic member 12 is greaterthan the outer diameter of the rotation shaft, and the elastic member 12is sleeved on the outer surface of the rotation shaft and is rotatablewith respect to the rotation shaft. The elastic member 12 is arrangedbetween two adjacent gaskets 11. The fixing member 13 is sleeved on theoutmost end of the rotation shaft and is detachably connected to therotation shaft. The fixing member 13 is configured to supply a force toboth the gaskets 11 and the elastic member 12, to maintain the gaskets11 and the elastic member 12 to abut against each other. The “detachablyconnected” refers to that the fixing member 13 can be fixed to therotation shaft, and can be detached from the rotation shaft.

In the locating assembly 20, adjacent two members abut against eachother under the action of the fixing member 13. When the first rotationshaft 1 and the second rotation shaft 2 rotate to a certain position,the elastic member 12 provides a frictional resistance to the gaskets11, and the frictional resistance fixes the gaskets 11 and the rotationshafts at the current position, thereby fixing the positions of thefirst rotation shaft 1 and the second rotation shaft 2 after beingrotated.

The position of the fixing member 13 on the rotation shaft can beadjusted according to the requirements, to increase or decrease thefrictional resistance between the elastic member 12 and the gaskets 11,thus the first rotation shaft 1 and the second rotation shaft 2 can havedifferent tensions during the rotation. The fixing member 13 can beadjusted to an appropriate position according to the preference of theuser.

Further, the elastic member 12 may be an elastic gasket, an elasticrubber, or an elastic silica gel, which can be set according to theactual requirements of the user.

Further, in this embodiment, the fixing member 13 is a nut, and thefixing member 13 is in threaded connection to the first rotation shaft 1or the second rotation shaft 2. Certainly, in other embodiments, thefixing member 13 may also be a snap ring. The structure of the fixingmember 13 is not limited to this embodiment and can be set according tothe actual requirements of the user.

As shown in FIG. 7, an electronic device is further provided accordingto an embodiment of the present application, which includes a first body14, a second body 15, and any one of the above-described double-shafthinges 30.

One end of the first rotation shaft 1 is circumferentially fixed on thefirst body 14, to allow the first rotation shaft 1 to be rotatable alongwith the first body 14. One end of the second rotation shaft 2 iscircumferentially fixed on the second body 15, to allow the secondrotation shaft 2 to be rotatable along with the second body 15. Thefirst body 14 and the second body 15 are connected by the double-shafthinge 30 to be rotatable with respect to each other in oppositedirections simultaneously. When a user moves the first body 14 or thesecond body 15, the first body 14 and the second body 15 rotate withrespect to each other in opposite directions simultaneously through thedouble-shaft hinge.

Further, the electronic device may be a laptop, a foldable tabletcomputer or a flip phone. The first body 14 may be a display or a tabletcomputer, and correspondingly, the second body 15 is a host or akeyboard, which can be set according to the actual requirements of theuser.

The first transmission member is circumferentially fixed on the firstrotation shaft, and the second transmission member is circumferentiallyfixed on the second rotation shaft, thus the first transmission membercan rotate along with the first rotation shaft, and the secondtransmission member can rotate along with the second rotation shaft. Thethird transmission member is arranged between the first transmissionmember and the second transmission member, and one end of the thirdtransmission member is engaged with the first transmission member, andthe other end of the third transmission member is engaged with thesecond transmission member. When the first rotation shaft rotates, thethird transmission member is rotated by the first transmission member onthe first rotation shaft, and the second connection member and thesecond rotation shaft are rotated by the third transmission member. Thefirst transmission member and the second transmission member areconnected by the third transmission member to be rotatable with respectto each other in opposite direction simultaneously, thus the firstrotation shaft and the second rotation shaft are also rotatable withrespect to each other in opposite direction simultaneously. The firstbody and the second body of the electronic device may be connected bythe double-shaft hinge to be rotatable with respect to each other inopposite direction simultaneously, thereby achieving the function of thedouble-shaft hinge. The double-shaft hinge provided by the presentapplication provides more choices for users, and enriches the type ofthe double-shaft hinge.

The above described embodiments are only the preferred embodiments ofthe present application, and are not intend to limit the presentapplication in any form. Any simple modifications, equivalentvariations, and improvements made the above embodiments based on thetechnical essence of the present application shall fall into the scopeof the technical solution of the present application.

What is claimed is:
 1. A double-shaft hinge, comprising a first rotationshaft and a second rotation shaft in parallel with each other, and atransmission device, the transmission device comprising: a firsttransmission member sleeved on the first rotation shaft andcircumferentially fixed on the first rotation shaft; a secondtransmission member sleeved on second rotation shaft andcircumferentially fixed on the second rotation shaft; and a thirdtransmission member arranged between the first transmission member andthe second transmission member, and having one end engaged with thefirst transmission member and another end engaged with the secondtransmission member; wherein the first transmission member and thesecond transmission member are rotatable with respect to each other inopposite directions simultaneously via the third transmission member;and wherein, the first transmission member is a first worm gear, thesecond transmission member is a second worm gear, and the thirdtransmission member is a worm, and the worm comprises and axle, and theaxle of the worm is perpendicular to the first rotation shaft and thesecond rotation shaft; and the double-shaft hinge comprises a firstconnection member and a second connection member, wherein the both thefirst rotation shaft and the second rotation shaft pass through each ofthe first connection member and the second connection member, and bothof the first rotation shaft and the second rotation shaft are rotatablewith respect to each of the first connection member and the secondconnection member, and both of the first worm gear and the second wormgear are arranged between the first connection member and the secondconnection member; and wherein, the first connection member is providedwith a support frame, the support frame is provided with a groove, andthe axle of the worm is mounted in the groove and rotatably cooperateswith the groove, and the second connection member is provided with aprotrusion for limiting the axle of the worm to rotate in the groove;and the protrusion abuts against the support frame and closes an openingof the groove, to define an axle hole for the axle of the worm.
 2. Thedouble-shaft hinge according to claim 1, wherein, the first worm gearhas one end abutting against the first connection member and another endabutting against the second connection member; and the second worm gearhas one end abutting against the first connection member and another endabutting against the second connection member.
 3. The double-shaft hingeaccording to claim 1, further comprising: two locating assemblies,wherein one of the locating assemblies is sleeved on the first rotationshaft, and the other of the locating assemblies is sleeved on the secondrotation shaft, and the locating assemblies are configured for fixingpositions of the first rotation shaft and the second rotation shaftafter being rotated; and each of the first rotation shaft and the secondrotation shaft comprises a shaft shoulder; the transmission device isarranged between the locating assemblies and the shaft shoulders, andone side of the transmission device abuts against the locatingassemblies, and another side of the transmission device abuts againstthe shaft shoulders.
 4. The double-shaft hinge according to claim 3,wherein each of the locating assemblies comprises: at least two gasketssleeved on the respective rotation shaft and circumferentially fixed onthe respective rotation shaft; at least one elastic member sleeved onthe respective rotation shaft and rotatable with respect to therespective rotation shaft, and the elastic member is arranged betweentwo adjacent gaskets; and a fixing member sleeved on the outmost end ofthe respective rotation shaft and detachably connected to the respectiverotation shaft, wherein the fixing member is configured to supply aforce to the at least two gaskets and the at least one elastic memberand to maintain the at least two gaskets and the at least one elasticmember to abut against each other.
 5. An electronic device, comprising afirst body, a second body, and the double-shaft hinge according to claim1; and wherein one end of the first rotation shaft is circumferentiallyfixed on the first body, and one end of the second rotation shaft iscircumferentially fixed on the second body, and the first body and thesecond body are rotatable with respect to each other in oppositedirections simultaneously via the double-shaft hinge.
 6. The electronicdevice according to claim 5, wherein the electronic device is a laptop,a foldable tablet computer, or a flip phone.